Mold for casting printers&#39; furniture.



PATENTED JULY 14, 1903.

I.-BAAS. MOLD FOR CASTING PRINTERS FURNITURE.

APPLICATION FILED JULY 6, 1898.

N0 MODEL.

TUNHED STATES Patented July 14, 1903.

PATENT OFFICE.

lSAAG BAAS, OF NEWARK, NElV JERSEY, ASSIGNOR TO AMERICAN TYPE FOUNDERSCOMPANY, A CORPORATION OF NEW JERSEY.

MOLD FOR CASTING PRINTERS FURNITURE.

STEECIFIGATION forming part of Letters Patent No. 733,531, dated July14, 1903.

Application filed July 5, 1898. Serial No. 685,083. (No modelil T 0 allwhmn it may concern.

Be it known that I, lsAAc BAAS, a citizen of the United States, residingat Newark, in the county of Essex and State of New Jersey, have inventedcertain new and useful Improvements in Molds for Casting PrintersFurniture, of which the following is a specification, reference beingbad to the accompanying drawings, forming a part thereof.

The main objects of my invention are in the manufacture of printersmetal furniture to avoid hand or machine work, planing, or finishing forthe purpose of removing the bur left by breaking off the jets and offorming feet for the furniture to stand upon, to form drain-holesthrough the bodies of the furnicore by simply breaking the jetstherefrom, to better distribute the metal'for resisting strain, and toreduce the cost of manufacture.

It consists in certain novel features in the construction of molds forcasting metal furniture, as hereinafter particularly described, andpointed out in the claim.

In the accompanying drawings like letters designate the same parts inthe several figures.

Figures 1 to 7, inclusive, illustrate a mold embodying myinvention, Fig.1 being a front elevation of the mold with all the parts except thefront plate assembled in position for casting a piece of furniture,Figs. 2, 3, 4, and 5 being perspective views of the upper moldsection,the nipple-plate, the lower mold-section, and the front plate,respectively, Fig. 6 being a vertical cross-section'on the line 6 6, andFig. 7 a horizontal longitudinal section on the line 7 7, Fig. 1; andFigs. 8 to 11, inclusive, show a piece of metal furniture such as saidmold is designed to cast, Fig. 8 being a vertical runningwise sectionand Fig. 9a bodywise elevation including the jet, Fig.

10 a runningwise section without the jet, and

Fig. 11 a plan view with the jet.

Referring to Figs. 1 to 7, inclusive, A designates the upper part orsection, and B the lower part or section, of the mold. These two partsare or may be like or similar to those of molds in common use forcasting metal furniture and type. They are brought together in the usualWay, as shown in Figs.

1, 6, and 7, and form a cavity of the exact runningwise and bodywisedimensions of the furniture to be cast. The upper mold-section is shownby itself in Fig. 2 and the lower mold-section in Fig. 4. The cavitythus formed by the upper and lower mold-sections is closed when theparts of the mold are assembled, as seen in Figs. 6 and 7, by thenipple-plate O on the back side next to the melting-pot and by the plateD on the front side of the mold. The nipple-plate O, with the bar E, bywhich it is supported on a typecasting machine, is shown by itself inperspective' in Fig. 3, the plate D being shown in like manner in Fig.5. The nipple-plate O is formed or provided on its front face, as shownin Fig. 3, with a pyramidal or tapering boss or projection F, which whenthe parts of the mold are assembled extends about midway into the cavityformed by the upper and lower mold-sections A and B. A

gate hole or passage f for filling the moldwith type-metal from themelting-pot of the casting-machine is formed through the bar E,nipple-plate O, and boss F, opening at its front or outer end into themold at or in the apex of said boss. By this means the jet 9 of metalfurniture Gis made to join the body in the cavity g, which is formed bythe boss F, as shown in Figs, 6, 7, and 8.

For casting furniture like or similar to that shown. in Figs. 8 to 11,inclusive, the plate D is formedor provided with a pyramidal or taperingboss or projection H, as shown in Fig. 5, like or similar to the boss Fon the nipple-plate, and this boss H projects about midway into themold-cavity when the parts of the mold are brought together, as shown inFigs. 6 and 7, so as to form a cavity g in the end of the furnitureopposite that formed by the boss F, as shown in Figs. 8 and 10. A spaceis left between the inner ends of the bosses F and H when the parts ofthe mold are assembled, so as to form at the base of the jet g a thinpartition, by which it is joined to the body of the furniture, as seenin Figs. 6, 7, and 8, and which is broken or driven out with the jet g,thus forming a drain-opening between the cavities g and g Heretofore incasting metal furniture the jet has generally, if not always, beenjoined to the bottom of the body and has extended completely across itin a runningwise direction. When such a jet is broken 01%, it leaves abur or rough projection on the bottom of the body, and this has to beplaned out, so as to produce feet for the body to stand squarely uponand a drain hole or opening into the cavity formed by a boss on thefront plate. In order to produce this drain hole or opening withoutplaning an unnecessarily deep groove in the bottom of the body, the bossfor forming the cavity is made relatively much longer than the boss Hwhich I employ in my mold, so as to leave a comparatively thin Wall ofmetal between the bottom of the cavity and the lower end of thefurniture-body.

In metal furniture it is necessary or desirable for greater strength tohave the greater thickness or volume of metal about mid way between theends of the body so as to afiord the greater support at that point. Thisis accomplished in my improved mold by making the tapering bosses on thefront and nipple or back plates extend into the cavity of the mold topoints nearly midway between its ends.

From the foregoing it will be apparent that with my improved mold andmethod of casting, the metal is distributed to better advantage,and thetime, labor,and expense required to remove the rough bur left by thejets and to form feet on furniture cast in the ordinary molds in theusual way, are saved, since by simply breaking OK or driving out thejets drain holes or openings are incidentally formed through the bodies.

I claim- A mold for casting metal furniture consisting of thecombination with side mold-sections of a back plate having a taperingboss with a gate-hole passing through it for forming a cavity in the endof the furniture-body to which the jet is attached, and afront platehaving a similar tapering boss for forming a cavity in the other end ofthe furniture-body, said bosses project-ing toward each other into thecavity of the mold when the parts are assembled in position for casting,and a thin space being left between the opposing ends of said bosses forthe passage of the molten metal from the gate-hole into the mold forforming a fragile partition connecting the jet with the interior wallsof the furniture-body between the cavities therein, substantially asdescribed.

In witness whereof I hereto affix my signature in presence of twowitnesses.

ISAAC BAAS. Witnesses:

R. V. WALDO, CHAS. S. CONNER.

